What kind of orbital is occupied by the lone pair electrons in caffeine molecule?

7. Carbon dioxide is collected over water at a temperature of 35 °C. The pressure of water vapor at 35 ˚C is 42.2 torr. The pressure of the collected gas (water vapor + carbon dioxide) has a pressure of 0.

What is the difference between a jar of hydrogen and oxygen and a jar of water vapor

A 17.0-g sample of hf is dissolved in water to give 2.0 x 10 2 ml of solution. the concentration of the solution is:

Temperature also affects the motion of atoms in a gas. Given what you know about temperature, pressure, and volume, which statement is NOT correct? A) As a gas is heated, the volume increases. B) As a gas is heated, the pressure increases.

Scientists use the Celsius scale as the si unit of temperature. True or False

For the following SN1 solvolysis reaction, select the correct rate equation and the overall reaction order (note: CH3OH is the solvent for the reaction). (CH3) 3CCl + CH3OH → (CH3) 3OCH3 + HCl

Which of the following is not a possible sublevel? 1s 2p 3f 4d

Fish breathe oxygen, o2, dissolved in the water. since water is a polar substance and oxygen is a nonpolar substance, how can there be any oxygen, o2, in the water?

Barium carbonate, baco3, is stable at ambient temperatures, but decomposes to barium oxide and carbon dioxide at higher temperatures.

How do an isotope and a radioactive isotope differ?